Slide bracket mechanism



H. J. KOBITTER SLIDE BRACKET MECHANISM 2 Sheets-Sheet 1 Filed July l0, 1959 Sept. 19, 1961 H. J. KoBlTTER SLIDE BRACKET MECHANISM 2 sheets-sheet 2 Filed July l0, 1959 WEL/72277 /A/@V J (U19/775? 3,000,686 SLIDE BRACKET MECHANISM Henry J. K'obitter, 834 Northwoods Drive, Deerfield, Ill.

Filed July 10, 1959, Ser. No. 826,274

8 Claims. (Cl. S12-333) The present invention relates broadly to mechanisms employed with slidable tray supporting brackets, and is more particularly concerned with a newvand improved latch device of especial utility with extensible slide brackets mounted on cabinet side walls for pivotally supporting a chassis carrying electronic instruments. v

It is an important aim of the present invention to provide a slide bracket mechanism featuringtherein a novel latch assembly having among its advantages a positive locking action whereby accidental release of the latch means is prevented. v

vAnother object of this invention lies in the provision of a locking and release mechanism for a slide bracket assembly attached to cabinet walls and supporting a chassis mounting electronic instruments to be moved outwardly from the cabinet and raised upwardly therefrom for access to' the underside of th'e electronic instrument,-

the locking and release mechanism departing from existing structures in its simplified construction, ease of fabrication, reduced wear thereon and a substantially reduced vertical profile.

Still another object of the instant invention is to provide a locking and release device for the purposes `indicated, and which embodies a latch member guided during verticaly translation to thereby prevent lateral displacements and facilitating the releasing andl locking action.

A still further object of the present invention isto provide an actuating assembly having lockingand releasing functions and which embodies a pivotal locking member and horizontally movable lever member having only straight line reciprocal travel, the lever member being provided with a diagonally disposed slot receiving pin means on the locking member, whereby when straight line horizontal movement is imparted to the lever member the pin means on the locking member travels within the slot to pivotally move the locking member to or from a position of engagement or disengagement.

Other objects and advantages of the invention will `become more apparent during the course of the following description, particularly when taken in connection with the accompanying drawings.

In the drawings, wherein like numerals designate like parts throughout the same: y

FIGURE 1 is a side elevational view of a slide bracket assembly, with parts broken away to` more clearly illustrate the details thereof, and showing the relative position of the parts when the assembly is essentially fullyr extended;

FIGURE 2 is a top plan view of the assembly of FIG- URE l;

FIGURE 3 is a side elevational view ofthe slide bracket assembly, with parts broken away and with yparts in section, and illustrating the assembly in a retracted position;

FIGURE 4 is a more or less enlarged side view of a latch assembly as provided in accordance with the principles of this invention, and illustrating in full line the relative position of the parts after locking and showing in dotted line the relative position of the parts during release.

Referring now to the drawings, there is shown a slide bracket mechanism generally designated by the numeral 10, a portion of which is secured in the manner to `be described along the inner surfaces of side walls 11 (only one of which is shown) of a cabinet 12 having a rear wall 13. A tray or drawer 14 carrying the electronic equip- Unired 'States Parmi* t erally indicated at 18, the details of which will now beA at.16 to the mechanism 10 secured to the cabinet 12.- While only a single slide bracket mechanism ltisV illustrated in the drawings, it is appreciated that with the exception of a lock and release device generally desig-A nated as 17, a mechanism 10 is also mounted by the opposite side wall 11. By 'means of the slide bracket.

mechanism or assembly 10 herein disclosed, and -as will be described in detail later, the tray or drawer 14 may be unlocked from the cabinet 12', slidably drawn rearwardly therefrom and pivoted about the point 16 through an angle of either 45 or 90 or 135 from the horizontalA and lock thereat for access to the underside of the tray or drawer 14.

The slide bracket mechanism 10 comprises in addition to the locking and release device 17, a slide assembly gendescribed. The slide assembly 18 is provided by three portions generally, a stationary outer member or plate 19 attached at 20 to the cabinet side wall 11 and vmounting generally centrally of the -width thereof a rib or track 21- receivingfor slidable contact an intermediate channel member 22 forming the second portion of the slide as sembly. The third portion of the slide assembly 18 is an inner channel member 23 slidable upon the intermediate channel member 22 and mounting many of the componentslof the locking and release device v17. To provide the desired slidable movement of the intermediate chan-I nel member 22 with respect to the track 21 and slidableV reciprocation of the inner channel member 23 relative Ato the intermediate channel member 22, the named parts are; provided with suitable race-ways in the manner known to .A the art in which conventional ball bearing means 24 may.

The locking and release device or mechanism 17 herein.. provided comprises an upstanding quadrant or semi-circu lar plate member 25 having a base ange 26 secured at 27 to the upper edge or surface of the inner channel mem ber 23. The plate member portion 25 of the lock and release mechanism has formed on one surface thereof a generally U-shaped protuberance 25a providing a channel 25b receiving a block 28 threaded to the semi-circular plate member 25 at 29 to lock the pivot pin 16 firmly in place. The block 28 functions to prevent displacef ment of the pivotally mounted tray or drawer 14, and its .removal is required when it is desired to remove said.

tray or drawer.

The plate 25 may be seen to be further formed with two sets of notchesa-b and 31a-b extending radially and opening outwardly along the periphery thereof. The

notches 30b and 31b, as compared with the notches 30a and 31aare relatively shallow, and the notches 30a and'l the named notches will now be described, andY it will be noted therein that during use of the plate member 25. four notches may be employed, these being the notches 30a, 30h, 32 and 31b. In other words, the notch 31a is not used when lthe quadrant member is located upon thev side-wall l1 shown, and provided for use when an identi-J cal plate 25 is mounted on the opposite side wall 11 of the cabinet. In this case, the notches 31a, 31h, 32 and'. Accordingly interchange` 30b would then be utilized. ability is provided.

As a feature of this invention, the locking and releasev device 17 further comprises a locking or latch member 33 provided with a downwardly formed hook 34 at one end thereof and pivotally connected at 35 to the quadrant member 25. The locking member may be seen in FIG- ment mounts an elongated plate ,15 p pivotally connected, rURE 2. .t0 be bent or shaped intermediate its oppositeendsg.

Patented sept. 19, 19er 3 p andthis has the advantage of reducing-the required length of e. lock-pin 36 secured to the stationary outer member 19. A possible interference of parts is thereby avoided, and in certain applications it may be found that the vertical profile of the slide bracket mechanism is reduced.

To laetuate the locking member 33 for pivotal movement about the point 35, the member 33 carries adjacent one end on its outwardly facing surface pin means 37 (FIGURE 4) received for reciprocal travel in a diagonally disposed elongated slot 38 provided in a lever member 39. The lever member 39 4is partially overlapped by the locking arm 33 and the pivot pin 35 extends therethrough into the quadrant plate 25. The lever member 39 is received upon the pivot pin 35 by a horizontally arranged elongated slot 40, and bottoming at one end in the slot 40 and at its opposite end against the pivot pin 35 is spring means 41 urging the lever member 39 rearwardly or to the left as viewed in the drawings. Separate spring means are not herein provided to return the latch arm 33 to a down position, since it has been found that adequate pivotal downward movement of the arm 33 -is accomplished by travel of the pin 37 in the slot 38 under the-resilient action of the spring means 41. However, a vertically arranged spring could be attached to the llocking member 33 and to either the base ilange 26 of the quadrant :member 25 orto the upper edge of the stationary outer member 19.

The opposite end of the lever member 39 has formed therein a generally horizontally arranged elongated: slot 42 receiving pin means 43 which may be .threaded into the quadrant member 25. It may now be seen that by provision of the horizontal slots 40 and 42 in the lever member 39 and the pin means 35 and 43 received therein, in combination with diagonal slot 38 receiving the pin 37 on the latch arm 33, the lever member 39 travels solely in ahorzontal plane or in a straight line to force the pin either downwardly and rearwardly Vin the slot 38 or forwardly and upwardly therein, depending upon the direction of straight line travel of the 'lever member 39, to swing or pivot the locking member 33 from .the full line position shown in FIGURE 4 to the dotted 4line location also indicated. 'It is to be further observed 'that in this invention there is no pivotal connection'between'the 'locking member 33 and lever member 39 at the end of the locking member carrying the ,pin 37, and further, there is no pivotal or vertical swinging of the lever member 39.

'The described structure of locking arm 33 and 'lever member 39, and the arrangementv of one with respect to .the other, has a number of important advantages. First, when the locking member 33 is`in the down or latched position with its hook ,portion 34 engaging the lock pin 36, it is not possible without straight .line reciprocation of the lever member 39 to disengagc the hook 34 from the pin 36. In other words, simply by ajarring of the .chest or drawer 14, or other inadvertent or accidental movement of the pans, it is not possible to unlock the arm 33. Thus, when no movement is imparted to the'lever member 39, the pin means 37 on the locking arm 33 .is'held essentially rigid in the slot 38 and prevents raising the locking 'arm to an unlatched position.

Another .advantage of the described construction is that there is 'relatively less wear on the parts since .only straight line or horizontal .movement of .the lever member 39 is provided. Also, the alot andpin .congurations are 'relatively easy to fabricate. In addition, .it may 'be noted upon reference to FIGURE 2 that .the right or front end of the lever member 39 is .intu'poeed between the loekingarm33 and the quadrant member 25. .Thereby, when the lever .member 39 isreeiprocatedtrom the full to dotted line position of FIGURE 4, .the forward or right end o! the levermember 39 advances along the 4edjacent end of the locking member 33 -to provide n guide stabilizing vthe locking arm during pivotal upward movement. Thereby, a moreecctiverrelease ufthe'hook-portion 34 :from the pin 36 :is etected, :and the locking arm 33 :is fcontinnonsly .ertieally alignedwith 'the locking .pin

to effect proper securement therewith upon downward pivotal orswinging travel.

The lever member 39 at the end thereof provided with the slot 42 has an upwardly extending arm 44 angularly bent outwardly at its uppermost end for reception in the notch 30a of the .quadrant member 25. Bearing against the arm portion 44 on the lever member 39 to effect straight line reciprocaton ofthe member 39 and pivoting of the locking member 33 is a locking and releasing rod 45 longitudinally slidable in bearing blocks 46 and .47 mounted by the elongated plate 15, which as noted, is secured tothe tray or drawer 14. It may be seen from the drawings that one .end of .the locking and releasing rod 45 is normally .partially received in the notch 30a of .the semi-circular ,plate 25, and the opposite end of the rod 45 extends through the front panelof the tray or drawer 14 and is provided with a linger hold or -handle 48.- The rod 45 is encircled by a spring 49 which bottoms at .one end against the bearing block 47 and at its opposite -end against a collar 50 supported by the rod 45. lt may now be seen that the function of the spring 49 is to urge the right or rearward end of the rod 45 into the notch 30a and continuously maintain the same therein.

Movement of the rod 45 rearwardly against angular end 44a .imparts straight line reciprocation to the .lever member 39 and upward pivotal `movement of the Ilocking arm 33 to release the hook portion 34 .thereof .from the locking pin 36, as hasbeen described. Withdrawal .of rod 45 by a pulling action upon -the linger hold 48 Aremoves the right or rearward end of the rod -45 from the notch 30a. The elongated plate .15, attached Vto the tray or drawer 14, ispivotally supported upon the pivot point 16, andaccording'ly, the tray or drawer 14 with .the rod 45 withdrawn from the notch 30a Amay be rotated .or tilted counterclockwise through an angle of either 45 .or ,or135. The 45' position would find the plunger rod 45 received 'in the notch 30b of the quadrant member 25, .and in the 90pos`ition, the rod .end would .be received in .the notch 32 in the quadrant member. When the 45 or 90 position represented .by .the notches 30b and 32 are reached, the linger .engagement .on the Ahandle 48 .is merely released .and .the plunger rod end seats in either of the named notches to iirmlylock .the .tray or .drawer 14 in a raised position for access to the .underside thereof.

The 'intermediate channel member 22 is loclted to :the inner channel member 23 by means of .a .lockingpin 5l pivotally attached to the .latch arm 33 and .depending therefrom through oriiicesin .the .flanged base ,2 6 .of .the senti-circular member ,25 .andin theinncr channel member 23 to engage in a pocket or notch 52 in .the top .ange of the intermediate channclmember 22. Thcintermediatc channel member 22 is locked .to the stationary/.outer member 19 when the parts areextended by means of a latch 5 3 pivotally supported or carried by -tlte 4stationary outermemher 19, asnt '54. The latch 53 has a hook .5 5 at-one end engaging the lower free corner of .the intermediate channel member 22, and is urged into this zposition Aunder action of a .spring .56. The latch 53 tis .designed to maintain the channel member 22 in position when sadmember is .fully extended. and to release tthe locking contact between .theehannel.memberllandouter memherl9 .whenthe parts rare.rctracted. Qln FIGURE .l the downward position of the latch 53 is indicated in dottedlines,.and .its ,position Awith .referen :to :the 'inner channel member 23 when saidmemberisretmcted is also shown therein.

1n addition .to performing -a normal @bearing function, the .ball bearing means24 in thcrncc-ways :bc-tween :the track .21 .andintermediate channel member 22 and iretweenihe :latter member audthe -inner channel '23 Iturther function to limit outward movement of the sliding channel members. The 4ball vbearing means 24 -are of the conventional type in which the ball portions seat fin apertures in metal -strips -at spaced `-locations therealong. Tofunction as=stop meansthe length ofthe stripportion s-,oomese' of the' bearing means 24 in the race-ways between the tract 21 fand the intermediate channel member 22 'arerace-ways between the inner channel member 23v and intermediate' channel member 22 contact opposite ends.

of the ball bearing means -24 therein to limit outward movement of the inner channel member 23 with respectl to the intermediate member 22.

The inner end of the intermediate channel member 2-2 is formed with a slot 61 to engage a pin 62 upon the track 21 when the intermediate member 22 is fully retracted, and'similarly, the opposite end of the-intermediate channel member 22 has a slot 63 Iformed therein to engage a pin 64 extending through lthe wall of the inner channel member 23. To permit the pin 51- to drop and to allow the hook portion 34 on the locking .arm 33' to engage the locking pin 36, the upper.'surface of the intermediate vchannel member 22 may have a generally concave depression 65 formed therein.

The operation of the slide bracket mechanism of this invention will now be described. As shown in FIG- URE 3, when the parts are retracted .the locking arm 33 by means of the-hooltlportion 34 thereon engages. the lock pin 36 on the stationary outer member 19. To slide the tray or drawer 14 outwardly from the cabinet 12,'

the plunger rod 45is pressedinwardly, which moves the lever member 39 in a straight line horizontal direction.k

The lever member-is guided in this direction by provision therein of the slots 40 and 42 .receiving the pins 35 and 43, respectively. During rearward straight line move ment of the lever 39, the pin,37 onthelocking arm 33 travelsdownwardly and :forwardly in the slot.38. in the lever 39, which tilts or pivots the locking arm 33 about the pivot point 3Sto the dotted; line position in FIGURE 4, at which location the hook portion 34s released from' the locking pin 36. The locking arm 33 remains inthe raised position only if the plunger rod is continuously depressed in opposition to the spring :4.9: thereon,l and when depressed and the lever member 39 moved rearwardly, the spring means 41 in the slot 40 of the lever member 39 is compressed. Accordingly, when the. plunger rod 45 has the pressing force thereon released, it moves forwardly or to the leftto vgenerally the position of- FIGURE 3, and simultaneously, the spring 41 returns the lever member 39 to the full line position of FIGURE- 4, and carries with it the locking arm 33 which then returns to its original downward position.

After the releasing action described has taken place, and during'withdrawal of thel tray or drawer 14, the

depending pin 51 rises out of the depression 65 and rides along the upper surface of the intermediate channel member 22 until it reaches the pocket or notch 52 in the upper surface of the channel member 22. Continued outward tray movement draws the intermediate channel member 22 outwardly, and when said member reaches the extent of its predetermined outward movement, the latch 53v swings upwardly to engage the extreme inner end of this member and lock the same to the stationary outer member 19. It may now be seen that theintermediate channel member 22 is locked to the stationary outer memberv 19, and the inner channel member 23-is locked to the intermediate channel member 22. The tray or drawer 14 may then be tilted upwardly to an angle of 45 or 90 or 135 by withdrawing the plunger rod 45 and releasing the same for engagement with either of the notches 30b or 32 or 31b, as earlier described.

To return the tray or drawer 14 to a horizontal position preparatory to moving the same into the cabinet 12, the plunger rod 45 is drawn outwardly to release the end thereof from eitherof the notches 30h or 32 or 31b. The tray or drawer 14 is then tilted counter-clockwise to a horizontal position and given inwardly directed movebe fabricated at relatively low cost. In addition, positive 6 ment, whereupon the inner channel member 23 rolls along the intermediate channel mem-ber 22 with the lock# ing pin 51 sliding along the top of the intermediate member 22 until it reaches the depression 65 to permit the` in the intermediate channel member 22 engages the stop.:

pin 62 on the tract 21. As now positioned, the tray or drawer 14 is locked in a retracted position within the cabinet 12, and to withdraw the same from the cabinet the plunger rod 45 must again be pushed forwardly to initiate the sequence first described.

It may now be seen that applicant has provided a new and improved locking and release mechanism which effectively insures that the locking arm 33 will not become disengaged fnom the lock pin 36 without the initiation of the intended positive action described. Pivotal movement of the lever member is herein eliminated, and by straight line reciprocation and the pin and slot arrangement described,

a more reliable release of the locking arm 33 is effected.- Further, excessive wear on the parts cannot occur by the simplified movement herein provided, and all parts may guiding means are herein provided for the locking armv 33, and it is thereby assured that the locking arm 33 will always bein a ready position for return to a locked position uponthe pin 36.

It is of course to be understood that various changes and modifications may be made to the structures herein disclosed without departing from the novel concepts of th present invention.

YI claim:

l. A slide bracket mechanism for pivotally mounting a trayl from a cabinet and releasably locking said tray thereto, comprising a slide assembly and a locking device; the slide assembly including a stationary member attached to the cabinet and at least one movable member slidable relative to the stationary member during extension and retraction of the slide assembly; the locking de-d vice including a quadrant member secured to the stationary member and having notches formed therein, a slidable rodl supported bythe tray and having one end engageable with the notches to maintain the tray in a particular position relative to the cabinet after extension and rotation with respect thereto, a lever member having a pair of horizontally arranged slots Itherein and provided with a turned portion received in one of the notches in the quadrant member, pin means received in each of the slots in the lever member and attaching said'members to the' quadrant member, and a locking member pivotally sup' ported by the quadrant member on one of the pin means and free of pivotal connection with the lever member, said lever member being driven in a straight line and horizontal direction by the slidable rod acting against the turned portionA thereon whereby the slots in the lever member move along the pin means and the locking member is pivoted 5 the sta.-

vertically to lock or release the tray to or from tionary member.

tray from a cabinet and releasably locking said tray thereto, comprising a slide assembly and a locking device; the# slide assembly including a stationary member attached to traction of the slide assembly; the locking device including a quadrant member secured tothe stationary member and having notches formed therein, a slidable rod supported by the tray and having one lend engageable with the notches to maintain the tray in a particular position rela- 2. A slide bracket mechanism for pivotally mounting a tive to the cabinet aiter extension and rotation with ber being driven in a straight line and horizontal direction by thc slidablc rod acting against the turned portion thereon whereby the slots in the lever member moveslong the pin means and thc locking member is pivotcd vertically to lock or release the tray to or from the stationary member, and resilient means in the slot in the lever member receiving the pivot pin means forthe locking member t returning the lever member in a straight line direction and the locking member to a down position when the slidable rod is released from positivo driving engagement with the turned portion on the lever member. l

3. A slide bracket mechanism for pivotally mounting a tray from a cabinet and releasably locking said tray thereto, comprising a slide assembly and aloeking device; the slide assembly including a stationary member attached to tha cabinet and at least one movable member slidable relative to the stationary member during extension and retraction of the slide assembly; thelocking device including .a quadrant member secured to the stationary member and having notches formed therein, a slidable rnd sur ported by the tray and having oneend engageable with the notches to maintain the tray in a particular position relative to the cabinet after extension and rotationv with respect thereto, n lever member having an angularly disposed elongated slot formed therein and supported by tbc quadrant member for straight line and horizontal movement relative thereto, said lever member being provided with an angularly bent portion received ln one of .the notches in the quadrant member to be driven thcrealong by movement of the slidable rod, .anda latching arm pivotally mounted on the quadrant member and provided with pin means received in the angularly disposed slot in the lever member and movable thcrealong during straight line rcciprocation oi the lever member to the latehing arm vertically to a position locking the tray to the stationary member or releasing the same therefrom.

4. A slide bracket mechanism for pivotally mounting a tray from a cabinet and releasably locking said tray thereto, comprising a slide assembly and a locking de vice; the slide assembly including a stationary member attached to the cabinet and at least one movable member slidablc relative to the .stationary member during nxtenson and retraction of the slide assembly; the locking dre` vice including a quadrant -member secured tn the stationary member and having notches formed therein, .a slidable rod supported by the tray and having one and engageable with the notches to maintain the tray :ina particular position relative to the cabinet after extemion and rotation with respect thereto, a lever member having a pair 'of spaced horizontally arranged elongated slots formed therein and an angularly disposed .elongated slot therebetween,

said lever member being provided with an angularly bent portion received in one of the notches in the quadrant member to be driven therealong by movement of the slid- 'able rod, screw means received in each of-the horizontal slots in the lever member and attaching :said member loosely to the quadrant member, and a latcbing arm pivotally mounted by the quadrant :member on one :ot-the screw means and supporting pin means received .in the angularly arranged slot in the lever member, whereby during :straight line reeiproeation .otjaid lever member with the screw means in the horizontal slots -guiding the lever member the pin .means on :the latcblng arm 'follows the :angularly arranged yslot to pivot .the latching arm to atposition locking the tray to :the stationary member or Y releasing the same therefrom.

5. A slide bracket mechanism for pivotally mounting s tray from a cabinet 'and releasably locking said tray thereto, comprising a slide assembly and a locking device; the slide assembly including a stationary member attached to the cabinet and at least one movable member slidnblc relative to thc stationary membery during extension and retraction of the slide assembly; -the loelting device including a quadrant member secured to the stationary member and having notches ,formed therein, a'slidable rod supported bythe tray and having one end engagcnblc with the notches to maintain the tray in a particular position rolative to the cabinet after extension and rotation with rcspect thereto, a lcvcr member having a pair ofspaccd horizontally arranged elongated slots formed therein and an angularly disposed elongated slot therebetween, said lever member being provided with an angularly bent portion received in one of thc notches in the quadrant member to be driven .therealong by movement of the slidable rod. screw means received in each of the horizontal slots.

in the lever member and attaching said member loosely to the quadrant member, a 'latching arm pivotally mounted by the quadrant member on one of the screw means and supporting pin means received in the angularly arranged slot in the lever member, whereby during straight line rccprocation of said lever member with the screw means in the horizontal slots guiding 'the lever member the pin means on the latching arm follows the angularly arranged slot to pivot the latching arm to a position locking the tray to the stationary member or releasing the same therefrom, and resilient means in the horizontal slot in the lever member receiving the pivot screw -means for the latching arm returning the lever member in a straight line direction and the latching arm to a down position when the slidable -rod is released from positive driving engagement Vwith the angularly bent -portion on the lever member.

6. ,A slide bracket mechanism for pivotally mounting a tray from a cabinet and releasably locking said tray thereto. comprising a-slide assembly and a locking device; the slide assembly including a stationary member attached to the cabinet and at least one movable member slidablc relative to the stationary member during extension and retraction of the slide assembly; the locking device including a quadrant member securcdto the stationary member and having notches formed therein, a slidable rod supported by the tray and having one end engageable with the notches to maintain the tray in a particular position relative tov-the cabinet after extension and rotation with respect thereto, a lever member and cooperating means on said lever-member and on said quadrant member for supporting said lever member and-providing straight line and horizontal movement of said lever membcrrelativo to said quadrant member, said lever member' having a turned portion received in one of the notches to be driven thcrcalong by movement of the slidable rod, a latching arm pivotally mounted on the quadrant member, and means connecting the Iatching arm to the lever member and translating straight lino movement of Vthe lever member into pivotal movement of the latching arm when the'lever member is moved by said slidable rod, the

tray being thereby locked to and released from the stationary member and the latching arm and lever member being free of pivotal connection one to the other.

7. A slide bracket mechanism for pivotally mounting a tray from va cabinet and releasably locking said' tray thereto, comprising a slide assembly and a locking device;

the slide assembly -including a stationary member attached to the cabinet and at least one movable -member slidable relative to the stationary member during extension and retraction of the slide assembly; the locking device including a plate member secured to the stationary member, a lever member having a pair of horizontally arranged slots therein and provided with an opstanding portion, a slidable rod supported by and extending outwardly from the tray and having one end engagcable with the upstanding portion of the lever member, pin means received in each of the slots in the lever member and attaching the lever member to the plate member, and a locking member pivotally supported by the plate member on one of the pin means and free of pivotal connection with the lever member, the lever member being driven in a straight line and horizontal direction by the slidable rod acting against the upstanding portion thereon whereby the slots in the lever member move along the pin means and the locking member is pivoted vertically to lock or release the tray to or from the stationary member.

8. A slide bracket mechanism for pivotally mounting a tray from a cabinet and relasably locking said tray thereto, comprising a slide assembly and a locking device; the slide assembly including a stationary member attached to the cabinat and a pair of movable members slidable relative to the stationary member and relative to one another during extension and retraction of the slide assembly, one of the movable members having a notch therein and the other of said movable members 'a pin-receiving opening; the locking device including a plate member secured to the stationary member, a lever member having a pair of horizontally arranged slots therein and provided with an upstanding portion, a slidable rod supported by and extending outwardly from the tray and having one end engageable with the upstanding portion of the 10 lever member, pin means received in each of the slots in the lever member and attaching the lever member to the plate member, a locking member pivotally supported by the plate member on one of the pin means and free of pivotal connection with the lever member, a pin member carried by the locking member and received in the notch in said one movable member and inthe pin-receiving opening in said other movable member to lock said movable members one to the other, and latchmeans mounted on the stationary member and engageable with one end of said one movable member to lock said one movable member to the stationary member when the slide assembly is fully extended, the lever member being driven in a straight line and horizontal direction by the slidable rod acting against the upstanding portion thereon whereby the slots in the lever member move along the pin means and the locking member is pivoted vertically to retract the pin member from the notch in said one movable member, permitting said one and said other movable members to slide relative to the stationary member and the latch means to engage said one movable member, thereby Ilocking the tray to the stationary member.

References Cited in the file of this patent UNITED STATES PATENTS 2,788,253 l Gussack Apr. 9, 1957 

